Home / 20,959.04-31,438.25-5,164.25

Finding the Fourth Proportional to 20,959.04, 31,438.25 and 5,164.25

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Solution

The fourth proportional to 20,959.04, 31,438.25 and 5,164.25 is: 7,746.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.04 : 31,438.25 = 5,164.25 : x
  2. Step 2: Convert to fraction form
    20,959.04/31,438.25 = 5,164.25/x
  3. Step 3: Cross multiply
    20,959.04x = 31,438.25 × 5,164.25
  4. Step 4: Simplify right side
    20,959.04x = 162,354,799.55
  5. Step 5: Solve for x
    x = 162,354,799.55/20,959.04
  6. Step 6: Final answer
    x = 7,746.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.